lossy
Definition
- Adjective:
- Characterized by or causing a reduction in quality or quantity, especially of data or signal integrity, as a result of processing or compression that discards some information. This is the primary technical meaning, most commonly used in computing and digital signal processing.
- Characterized by or causing dissipation of energy. This is a more general scientific meaning, referring to systems where energy is lost, typically as heat.
Usage and Examples
- In computing and data compression:
- JPEG is a lossy compression format for images, meaning some detail is permanently discarded to reduce file size.
- Converting an audio file to an MP3 using lossy compression will result in a smaller file but lower fidelity compared to the original.
- In physics and engineering (less common):
- The electrical component was lossy, converting some of the signal's energy into unwanted heat.
Advanced Usage
- "Lossy compression": The standard technical term for data compression methods that achieve smaller file sizes by permanently eliminating redundant or less important information. The opposite is "lossless compression."
- For archiving important documents, avoid lossy compression to ensure no data is corrupted.
- "Lossy medium": A material or environment (e.g., a poor electrical conductor) that causes significant energy loss as a signal passes through it.
- Radio waves attenuate quickly in a lossy medium like seawater.
Variants and Related Words
- Lossless (adj): The direct antonym. Describes compression or a system where no information or energy is lost.
- FLAC is a lossless audio format that preserves the original sound quality.
- Loss (n): The general concept of something being lost, which forms the root of the adjective.
- Lossiness (n): The quality or degree of being lossy (a technical term).
Synonyms
- Degrading: Causing a decline in quality (general synonym for the effect).
- Compromising: Involving a trade-off where something is given up (e.g., quality for size).
- Dissipative: Causing energy to be dissipated (closest synonym for the physics meaning).
Antonyms
- Lossless: Preserving all original data or energy.
- Fidelity-preserving: Maintaining exact quality or detail.
- Conservative: In the context of systems, one that does not lose energy or information.
Adjective
-
characterized by or causing dissipation of energy
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